Which statement is true about the polynomial 5562 + 65° - 8562 - 67 after it has been fully simplified? It has 3 terms and a degree of 9. O It has 3 terms and a degree of 10. It has 4 terms and a degree of 9. O It has 4 terms and a degree of 10.​

b.my answer is b.

brainliest

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18